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Electric Circuits

Electric Circuits
Condition of symmetry in Z-parameter representation is

 Z11 = Z12.
 Z12 = Z22.
 Z12 = Z21.
 Z11 = Z22.

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Electric Circuits
Cells are connected in parallel in order to increase

 life of the cells.
 efficiency.
 voltage rating.
 current capacity.

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Electric Circuits
A capacitor is charged by a constant 10 mA current sources which is turned on for 1 second. Assuming the capacitor is initially charge free; determine the charge delivered to and the power supplied by the source if the capacitor has a value of 1 mF.

 0.1C, 100MW.
 0.01C and 5W.
 0.01C, 10MW.
 0.1C, 10MW.

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Electric Circuits
The resistivity of the conductor depends on

 none of these.
 length of the conductor.
 type of material.
 area of the conductor.

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Electric Circuits
The resistance of a conductor of diameter d and length l is R Ω. If the diameter of the conductor is halved and its length is doubled, the resistance will be

 8R Ω
 4R Ω
 R Ω
 2R Ω

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Electric Circuits
Which of following is the unit of magnetic flux density?

 Lumens.
 Weber.
 Tesla.
 Daraf.

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MORE MCQ ON Electric Circuits

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